13
Second Model – Modified by Mansukhbhai, Main Features:  The problem of lesser strength of the L-section was solved by using channel-section panel.  Number of teeth of chain sprocket was increased to 50. This reduced the speed of the vehicle.  Remolded tyres provided  New Fiat’s differential  Depth control facility and mechanical lifting arrangement for plough  Bent bar for supporting the person standing on tool bar was provided obviating back breaking posture Cost: Rs 15,000/- later 20,000/- excluding cost of motorcycle Limitations: - Sturdy / heavy look - Lack of ergonomics and aesthetic consideration

14
Third Model: Developed by GIAN through NID, 2002 Main Features:  Diesel Bullet, Chhakda  Lifting mechanism for the saanti (kind of Hydraulic system)  Differential of Fiat  Chain Sprocket-50 teeth  Traction Tyres (2001)  Channel -section panel was used in the supporting frame Limitations: Requires high investment & not suitable for local production Provision for additional requirements of farmers are missing ( like provision for carrying equipments while transportation from home to farm) Plough needed to be redesigned, modified design was not acceptable to the farmers (one can not accept / change in size of their main equipments like plough, harrow etc). Low user friendliness.

15
Fourth Model: by Mansukh bhai in New Features included: -Gear box with Reverse gear facility -extension rod on the rear side with which spacing among the rows could be increased. Cost: Rs 45,000/- Limitations:- Cost is very high Bullets are not available easily

17
Sixth Model: by Mekaranbhai, Amreli, 2008 Main Features: Similar to the fifth model except : a) length and thus the turning radius was reduced by changing the way engine was aligned with differential; b) the shock absorbers on the front side were replaced by fixed stand having a single spring in the middle reducing the maintenance costs. Cost: Rs 85,000/- Limitations: Axel often broke down due to improper distribution of torque

18
Seventh Model: by Rajendrabhai, Amreli, 2010 Main Features: - Assembled model with the new kind of chasis, -Crompton greaves 10 hp engine, - Hydraulic system for lifting the attachments, - Diesel tank was moved behind, making front section much more comfortable for the driver. -One additional feature: different brake system for each wheel to facilitate turning. - Foot accelerator used to replace hand accelerator. - A small revision was made in one of the derivative models with foot operated hydraulic. Cost :1.07 lac with new engine.

19
Eighth Model: Handio by Rashikbhai Bhavnagar 2010 Main Features: -Tall model having differential about 4 to 4.5 feet above the ground and total height being six feet high. - It could use two tool bars instead of only one so far. It used 10 hp motor -Very useful for spraying pesticides in standing crop of cotton. Cost: Rs 1.0 lac with old engine and without hydraulic while with all new parts and with hydraulic, it cost about Rs 1.8 lacs. It was also Limitation : Higher fuel consumption.

20

21
District wise Fabrication of Santi Vs No. of Mechanics in the four districts Number of Santi made Number of mechanics Total Amr eli RajkotJamnagar Bhavnaga r >20024 Total